钢筋应力松弛是指钢筋受力后在长度不变的条件下,钢筋应力随时间的增长而降低的现象。()
纵向钢筋的多少只影响到钢筋混凝土构件的正截面承载能力,不会影响斜截面的承载能力。()
渗透系数愈小或抗渗等级愈大,表示材料的抗渗性愈好。()
1) Television provides us with the information of the world.
2) Television helps us to improve ourselves.
3) Television offers entertainment.
You should write 160-200 words on ANSWER SHEET 2.